| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA0AI | 1955 | 27.73 % | | 3722 | 27.58 % | | 2 | C C D C C C | BG1REN | 1834 | 26.01 % | | 2972 | 22.03 % | | 3 | C C D C | AA1K | 1175 | 16.67 % | | 2737 | 20.28 % | | 4 | C D C C | D1DX | 1010 | 14.33 % | | 2099 | 15.56 % | | 5 | C D C C C | C6AGU | 687 | 9.74 % | | 1120 | 8.30 % | | 6 | C D D C C | A45XR | 89 | 1.26 % | | 192 | 1.42 % | | 7 | C D D C | A44A | 78 | 1.11 % | | 192 | 1.42 % | | 8 | D C D C C | 3B9HA | 54 | 0.77 % | | 102 | 0.76 % | | 9 | C D C | B1Z | 41 | 0.58 % | | 98 | 0.73 % | | 10 | D C D C | 3Z0X | 41 | 0.58 % | | 96 | 0.71 % | | 11 | D C D C C C | 2E0CVN | 11 | 0.16 % | | 22 | 0.16 % | | 12 | C D D C C C | E21YDP | 7 | 0.10 % | | 18 | 0.13 % | | 13 | C C D / C C D C C | CT9/OK6RA | 7 | 0.10 % | | 9 | 0.07 % | | 14 | C C D C C C / D | JA6UFF/6 | 4 | 0.06 % | | 6 | 0.04 % | | 15 | C C D C C C / C C C | IK3TZB/QRP | 4 | 0.06 % | | 5 | 0.04 % | | 16 | C C D C C / C | DL0GE/P | 3 | 0.04 % | | 3 | 0.02 % | | 17 | C C D C C / D | JT1CD/0 | 3 | 0.04 % | | 3 | 0.02 % | | 18 | C D C C / D | K9JF/7 | 3 | 0.04 % | | 4 | 0.03 % | | 19 | C C D / C C D C C C | EA8/DL2DXA | 3 | 0.04 % | | 6 | 0.04 % | | 20 | C C D C C C / C | DL1AQU/P | 3 | 0.04 % | | 6 | 0.04 % | | 21 | C C D C C / C C C | EA1GT/QRP | 2 | 0.03 % | | 4 | 0.03 % | | 22 | D C D / C C D C C | 8R1/AG6UT | 2 | 0.03 % | | 8 | 0.06 % | | 23 | C C D D C | OF10A | 2 | 0.03 % | | 6 | 0.04 % | | 24 | C C D / C D C C C | CT7/F6HBR | 2 | 0.03 % | | 4 | 0.03 % | | 25 | C C / C C D C C | OE/DJ6OI | 2 | 0.03 % | | 2 | 0.01 % | | 26 | C D / C C D C C | V5/DK1CE | 2 | 0.03 % | | 3 | 0.02 % | | 27 | C C D C C / C C | RA0LQ/MM | 2 | 0.03 % | | 5 | 0.04 % | | 28 | C C D C / D | NE8O/4 | 2 | 0.03 % | | 3 | 0.02 % | | 29 | D C / C C D C C C | 4X/UA9CTT | 1 | 0.01 % | | 1 | 0.01 % | | 30 | C C D / D C D C C | CT9/9A3XV | 1 | 0.01 % | | 1 | 0.01 % | | 31 | C C D D C C C | HA60KNA | 1 | 0.01 % | | 1 | 0.01 % | | 32 | C C D / C C D C | CT9/OL3R | 1 | 0.01 % | | 1 | 0.01 % | | 33 | C C D / C D C C | CT9/R7KW | 1 | 0.01 % | | 6 | 0.04 % | | 34 | D C C D C | 3XY3D | 1 | 0.01 % | | 1 | 0.01 % | | 35 | C C D C C C C | DA0WRTC | 1 | 0.01 % | | 5 | 0.04 % | | 36 | C C / C C D C C C / C | LX/PA3EZC/P | 1 | 0.01 % | | 4 | 0.03 % | | 37 | C D C C / C D | K5ZX/W7 | 1 | 0.01 % | | 1 | 0.01 % | | 38 | D C / C D C C C | 3A/F8BBL | 1 | 0.01 % | | 1 | 0.01 % | | 39 | D C D / C C D C C C | 9M2/JE1SCJ | 1 | 0.01 % | | 1 | 0.01 % | | 40 | C C / C C D C C C | PA/PY2SEX | 1 | 0.01 % | | 5 | 0.04 % | | 41 | C C / C D C C C | FG/F6ARC | 1 | 0.01 % | | 1 | 0.01 % | | 42 | C C D D D C C C C C | TC630MECCA | 1 | 0.01 % | | 2 | 0.01 % | | 43 | D C D C C C / D | 7N2JZT/6 | 1 | 0.01 % | | 2 | 0.01 % | | 44 | C C D C C C / C D | VE3CWN/W4 | 1 | 0.01 % | | 1 | 0.01 % | | 45 | C C D C C / C C D | VE3RZ/VP9 | 1 | 0.01 % | | 5 | 0.04 % | | 46 | C C D D D C C | VQ917JC | 1 | 0.01 % | | 1 | 0.01 % | | 47 | C C D D C C | VR20EH | 1 | 0.01 % | | 1 | 0.01 % | | 48 | C D / C C D C | W4/KP4Y | 1 | 0.01 % | | 1 | 0.01 % | | 49 | C C D C / C C C | YT5W/QRP | 1 | 0.01 % | | 1 | 0.01 % | | 50 | C D D D C | Z370M | 1 | 0.01 % | | 3 | 0.02 % | |
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